BMW E92 Engine Control Unit ECU + CAS3 + Key Kit 231 HP 330d M57N2 7805286

BMW E92 Engine Control Unit ECU + CAS3 + Key Kit 231 HP 330d M57N2 is a complete, used electronic package designed for a diesel engine with an automatic transmission. The kit includes the engine control unit, the CAS3 module, and the key, which facilitates a consistent replacement of electronic components responsible for starting and operating the powertrain. Due to the preserved integrity of the components, it serves as a practical service solution for repairs of the control system in the BMW 3 Series E92 330d.

Specifications and technical data

• SKU: 7805286-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7805286
• Substitutable numbers: 7805286, 13617809654, 7809654, 13617808654, 7808654, 13617804843, 7804843, 13617805585, 7805585, 13617805286, 0281014205, 0 281 014 205, 61356943814, 6943814, 5WK49511FBR, 0281013853
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: ECUs & Computer Modules

Purpose and function of the ECU CAS3 control unit kit

The presented kit belongs to the Electronic control modules and ECUs category and is dedicated to BMW vehicles with a diesel engine and an automatic transmission. The ECU is responsible for precise management of the powertrain, while the CAS3 module works with the key, handling start authorization and communication with other vehicle systems.

Combining these elements into one set reduces the risk of electronics matching issues, which is particularly important in modern security and engine control systems. The kit is suitable for users who want to restore the correct factory configuration without the need for tedious programming of multiple unpaired modules.

Benefits of using a complete ECU + CAS3 + key kit

Using a complete engine control unit package with the CAS3 module and key in a BMW E92 330d brings a number of practical service benefits:

• consistency of the electronics responsible for starting and engine control,
• reduction of problems with immobilizer and key synchronization,
• facilitation of workshop work when adapting the kit to the vehicle,
• possibility of restoring the correct operation of the control system after the failure of original modules.

For cars with a diesel engine and an automatic transmission, stable cooperation of the controller with other vehicle systems is particularly important. This type of kit often allows for shortening the time of diagnostics and repair, as well as organizing the electronics configuration after previous, inconsistent modifications.

Application in the BMW 330d powertrain

In the BMW 3 Series E92 330d model with the M57N2 unit, the ECU manages, among other things, fuel dosing, engine accessory operation, and communication with modules responsible for the automatic transmission. The CAS3 module acts as a central element of the access and start system, cooperating with the key and other controllers in the vehicle.

Replacing the complete ECU + CAS3 + key set is a frequently chosen solution in situations where several elements have been damaged simultaneously or when previous attempts to repair individual modules have not brought the expected result. This method of service allows for a more predictable outcome and organization of the electronics configuration in the vehicle.

Condition, origin, and assembly aspects

The offered kit is an original BMW part from dismantling, which means it was previously used in a vehicle. Such components are eagerly chosen by workshops specializing in the BMW brand because they allow for maintaining the factory characteristics of the powertrain operation while reducing costs compared to new parts.

Before assembly, it is recommended to verify the compatibility of the vehicle configuration and perform appropriate adaptation and diagnostic procedures at a specialized service center. A properly selected and adapted kit can significantly improve engine stability and solve problems with starting or communication between modules.

Substantive support and additional information

If you want to better understand how BMW engine controllers, comfort modules, and iDrive systems in the 3 and 5 series work, it is worth reaching for our guide material. Practical tips on using parts from dismantling, including FRM modules and ECU controllers, can be found in the article Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models.

If you are planning a comprehensive repair or modernization of the control electronics area in your BMW and need other elements from the same group, such as engine controllers, comfort modules, or security systems, check the available parts in the BMW electronic control modules and ECUs category.